Variable-pressure regulator



Oct. 5, 1926.

1 1,602,209 R. PROELL E VARIABLE PRESSURE REGULATOR Filed March 20, 1925Patented Get, 5, 1926.

REINHOLD PBOELL, OF DRESDEN,

res

GERMANY.

VARIABLE-PRESSURE REGULATOR.

Application filed March, 20, .1925 Serial No.

This invention relates to an indirectly acting pressureregulating-apparatus, 1n

which the mo power-piston is regul opening or closing, a sages arrangedin lating-apparatus However, so' far as to turn the rotary-valve by apart shaped as a cylinder,

provided so causing the tive fluid used to displace a ated by arotary-valve s may be required, passaid power-piston. Reguf this kind iswell known. I am aware it is new guide-piece .or drum or pipe,screw-like or helical slot, al-

automatic return-movement with of the rotary-valve by a tappet arrangedon said rotary slot during the -valve and operating in said forward andreturn movement of the power-piston.

Referring to forming a part of the specification, like numeralsdesignate two view tional view and- Fig. 2

the accompanying drawingin which like parts in the longitudinalsecs,-Fig. 1 is a a transversal sectional view of the apparatustaken online Fig. l.

a designates a cylinder and b the power- 5 piston or plunger providedwith passages 0.

Said passages, which can also be arranged in a special mentioned,

part connected with the piston are controlled by the rotaryvalve dguided 'within an annular. groove provided ton or plunger 6.

from the in the projecting parte of the pisort in said rotaryrotary-valve. Said rotary-valve d by a drum or cylinder 9 in the wall ofwhich is a helical groove or slot h, which arm m.

acts" as aguide for the tappetor The cylinder a is provided with aninlet port i at one end thereof and with an outlet port Z adjacentpassages trated, or

the other end thereof. The a formed in the piston b and the ay beprovided as illusin any other suitable manner, and

preferably at the inner end of the stem e the passage 0 ports c aturning the rotary v f therein ,the same.

terminates in radially disposed dapted to be opened and closed by alve(i so that the ports register with the ports 0' or close Furthermore,the drum 9 having the helical slot h in which the arm m of the rotaryvalve operates is normally in position apparatus, bly adjusted toposition,

ent, so movemen fixed for any given operation of the but this drum 9 maybe revoluas will be appars to determine the extent of the of the pistonwhichis. necessary come in. this manner. maintained until therotary-valve is turned passage 0,

or plunger 1;, it issues agal 17,013, and in Germany September a, 1924.

to open the rotary valve by causing the ports f thereof to registerwith'the rotary ports 0' in the stem 6 of the piston b. 1

The mode of operation of the apparatus explained above is as follows:

If the motive fluid supplied by an oilpump for example enters into thecylinder a at 2', it causes a ton or plunger b, which is prevented fromturning in a cylinder by a groove a and a tongue or pin 6' in any othersuitable man-- ner. The resistance effected by a distributing+valvemotion, shutter or the like is over- This operation is by the drum orcylinder to such an extent, that the oil is permitted to flow throughthe c and the ports In this operation the piston. or plunger forwardmovement until the rotary-valve is turned by the screw-like sloth tosuch an extent that the oil may flow or pass through the ports in thevalve. In the return will continue its '75 movement the piston 12 movesin the other-.

direction under the influence of a or other equivalent suitable means,until the valve has closed the passages a or reduced the open section ofthe passages f to such an extent that the pressure of equazlizes theforces acting against the piston v The apparatus described allows. anextraordinarily intense sensibility to be obtained,

spring 70 the throttled oil 35 for the reason that the rotary-valvemaybe of light weight and of small length, whereb resistances caused bythe viscosity of the 011 are prevented. Furthermore, the.guid-. ingcylinder 9 serving for the displacement of the rotary-valve can also beconstructed of light weight, as" no material pressure is brought to bearagainst it. After the oil has passed the passages c and f of the pistonder a at the port Z.

.VVhat I-claim-is:

1. In a .variable pressure regulator, a

cylinder, a piston movable longitudinally therein, a stem forming partof the piston and having a passage therein, mounted on the stem of thepiston, and means for operating the said valve by the movement of thepiston.

2.In a variable pressure gulator, a cylinder, a piston movablelongitudinally therein, a stem forming part of the piston and havingapassage therein, a rotary valve 11' from the cylina rotary valve fmounted on the stem a cylinder, a piston movable longitudinally an armcarried by therein, a stem extending from the piston and having a assa etherein terminating adjacent the en r posed ports, a rotaryvalve mountedon the stem and adapted to cover the radial ports in the stem and alsoto uncover the same by ports provided for this purpose in the valve, adrum having a helical slot therein, and

the rotary valve and operating in-the helical slot in the drum wherebyin the movement of the piston the rotary valve is turned to open andclose the same.

4. In a variable pressure regulator, a

of t e stem in radially dis;

cylinder, a piston movable longitudinally therein, a stem extending fromthe piston and having a passage therein terminating adjacent the end ofthestem in radially disposed ports, a rotary valve mounted on the stemand adapted to cover the radial ports in the stem and also to uncoverthe same by ports provided for this purpose in the valve, a drum havinva helical slot therein, an arm carried by t e rotary valve andoperating in the helical slot in the drum whereby in the movement of thepiston the rotary valveis turned to open and close the same, and aspring for moving the said piston in one direction.

' In testimony, that I claim the foregoing as my invention, I havesigned my name this th day of February, 1925. Y

REINHOLD PROELL. A

